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Catalytic reduction for water treatment

Frontiers of Environmental Science & Engineering 2018年第1期12卷 25-42页

作者： Maocong Hul Yin Liu Zhenhua Yaol Liping Ma Xianqin Wang Department of Chemical Biological and Pharmaceutical Engineering New Jersey Institute of Technology Newark NJ 07102 USA Primus Green Energy Hilfsborough NJ 08844 USA Oil ＆ Gas Technology Research Institute of Changqing Oilfield Company Xi＇an 710018 China

Treating water contaminants via heterogeneously catalyzed reduction reaction is a subject of growing interest due to its good activity and superior selectivity compared to conventional technology, yielding products that are non-toxic or substantially less toxic. This article reviews the application of catalytic reduction as a progressive approach to treat different types of contaminants in water, which covers hydrodehalogenation for wastewater treatment and hydrogenation of nitrate/nitrite tbr groundwater remediation. For hydrodehalogenation, an overview of the existing treatment technologies is provided with an assessment of the advantages of catalytic reduction over the conventional methodologies. Catalyst design for feasible catalytic reactions is considered with a critical analysis of the pertinent literature. For hydrogenation, hydrogenation of nitrate/nitrite contaminants in water is mainly focused. Several important nitrate reduction catalysts are discussed relating to their preparation method and catalytic performance. In addition, novel approach of catalytic reduction using in situ synthesized H2 evolved from water splitting reaction is illustrated. Finally, the challenges and perspective tbr the extensive application of catalytic reduction technology in water treatment arc discussed. This review provides key information to our community to apply catalytic reduction approach for water treatment.

关键词： halogenated compoundsnitrate/nitrite contaminantshydrodechloriantionhydrogenationwastewater treatmentgroundwater remediation

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